peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 150

• Manufacturer Part Number: peb2256
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

5.3
5.3.1
• Alarm Indication Signal: Detection and recovery is flagged by bit FRS0.AIS and
• Loss-Of-Signal: Detection and recovery is flagged by bit FRS0.LOS and ISR2.LOS.
• Remote Alarm Indication: Detection and release is flagged by bit FRS0.RRA and
• Excessive Zeros: Detection is flagged by bit FRS1.EXZD.
• Pulse-Density Violation: Detection is flagged by bit FRS1.PDEN and ISR0.PDEN.
• Transmit Line Shorted: Detection and release is flagged by bit FRS1.XLS and
• Transmit Ones-Density: Detection and release is flagged by bit FRS1.XLO and
Table 38
Alarm
Red Alarm or
Loss-Of-Signal
(LOS)
Blue Alarm or
Alarm Indication
Signal (AIS)
Data Sheet
ISR2.AIS. Transmission is enabled by bit FMR1.XAIS.
ISR2.RA/RAR. Transmission is enabled by bit FMR4.XRA.
ISR1.XLSC.
ISR1.XLSC.
Additional Receive Framer Functions (T1/J1)
Error Performance Monitoring and Alarm Handling
Summary of Alarm Detection and Release (T1/J1)
Detection Condition
no transitions (logical zeros) in a
programmable time interval of 16
to 4096 consecutive pulse
periods. Programmable receive
input signal threshold
FMR4.AIS3 = 0:
less than 3 zeros in 12 frames or
24 frames (ESF),
FMR4.AIS3 = 1:
less than 4 zeros in 12 frames or
less than 6 zeros in 24 frames
(ESF)
150
Clear Condition
programmable number of ones
(1 to 256) in a programmable
time interval of 16 to 4096
consecutive pulse periods. A one
is a signal with a level above the
programmed threshold.
or
the pulse-density is fulfilled and
no more than 15 contiguous
zeros during the recovery
interval are detected.
active for at least one multiframe.
FMR4.AIS3 = 0:
more than 2 zeros in 12 or 24
frames (ESF),
FMR4.AIS3 = 1:
more than 3 zeros in 12 frames
or more than 5 zeros in 24
frames (ESF)
Functional Description T1/J1
FALC56 V1.2
PEB 2256
2002-08-27